BENDIX BW2396 User manual

Brand: BENDIX

Model: BW2396

Category: Motor vehicle accessories & components

Type: User manual

This manual is also suitable for

SD-08-187B

SD-08-187B

Bendix

PuraGuard QC

™

Oil Coalescing Filter

DESCRIPTION

The PuraGuard QC

™

oil coalescing filter provides purified

compressed air on any air braked vehicle. It consists of a

spin-on housing, or cartridge, mounted to an aluminum body.

The spin-on cartridge contains a drain valve for maintenance.

For ease of serviceability, the spin-on cartridge can be

removed without disconnecting the supply and delivery lines

of the PuraGuard QC

™

oil coalescing filter from its mounting

on the vehicle.

Vehicles operate best with clean, dry compressed air. The

PuraGuard QC

™

oil coalescing filter removes approximately

90% of oil aerosols and particulates down to 1 micron in

size, but it must be used in a system with and follow an air

dryer.

OPERATION

GENERAL (See Figure 2)

Compressed air passes through the supply port of the

PuraGuard QC

™

oil coalescing filter and travels downward

through the center of the filter element. As the air passes

through the filter material, oil in liquid and aerosol form are

removed and collected in the sump. The PuraGuard QC

™

filter also collects solid particles 1 micron and larger. The

cleaned air travels back up from the sump, through the

delivery port and into the air system.

FIGURE 2 - CUT-AWAY SHOWING AIR FLOW

SEAL

SUPPLY

PORT

FIGURE 1 - PURAGUARD QC

™

OIL COALESCING FILTER

DELIVERY

PORT

SUPPLY

PORT

TOP

VIEW

ONE SUPPLY & ONE DELIVERY PORT

(SEE ARROW SYMBOL ON THE BODY

FOR AIR FLOW)

DRAIN VALVE

MOUNTING

BRACKET

PURAGUARD

BODY

SPIN-ON

CARTRIDGE

EXTERIOR

VIEW

SPRING

FILTER

DELIVERY

PORT

SPRING

LOCATOR

DRAIN

PORT

1 SUP

2 DEL

4. Perform the Operation & Leakage Tests listed in this

publication.

Every 3,600 operating hours, 100,000 miles or one (1)

year:

1. With the air system pressure at 0 p.s.i., drain collected

contaminants for disposal.

2. Visually check for physical damage to the PuraGuard

™

filter such as chaffed or broken air hoses and

broken or missing parts.

3. Replace the cartridge (see Maintenance Kits, Figure

5). Do not use the drain valve to remove the cartridge.

4. Check mounting bolts for tightness. Re-torque to 160-

200 in-lbs.

5. Perform the Operation & Leakage Tests listed in this

publication.

The PuraGuard QC

™

oil coalescing filter has two female

pipe thread air connections: one supply, one delivery —

identified by their relationship to the arrow symbol showing

air flow on the PuraGuard QC

™

filter top (see Figure 1).

Note: The PuraGuard QC

™

filter is not recommended to be

used in conjunction

with an alcohol evaporator or injector. The

PuraGuard QC

™

oil coalescing filter will remove the liquid or

aerosol alcohol introduced, defeating the purpose of the

evaporator/injector and requiring the sump to be drained more

often than normal.

FILTER BYPASS (refer to Figure 4)

If a situation occurs where the ability of the filter to allow air

to pass is impaired and causes a pressure difference of

approximately 20 p.s.i. between the air entering the filter

element and exiting, the filter will move downward against

the spring. The air entering will then be able to bypass the

filter element.

PREVENTIVE MAINTENANCE

Important: Review the warranty policy before performing

any intrusive maintenance procedures. An extended warranty

may be voided if intrusive maintenance is performed during

this period.

Because no two vehicles operate under identical conditions,

maintenance intervals will vary. Experience is a valuable

guide in determining the best maintenance interval for a

vehicle.

Every 300 operating hours, 8,000 miles or one (1)

month:

1. With the air system pressure at 0 p.s.i., use the drain

valve to collect contaminants for disposal. Do not open

the valve beyond shoulder stop. This could loosen the

handle.

2. Visually check the PuraGuard QC

™

filter for broken or

missing parts.

3. Check mounting bolts for tightness. Re-torque to vehicle

manufacturers guidelines.

FIGURE 4 - BYPASS

FILTER MOVES

DOWNWARDS

AGAINST

SPRING

FORCE

FIGURE 3 - PURAGUARD QC

™

OIL COALESCING FILTER INSTALLATION SYSTEM WITH AIR DRYER

PuraGuard QC™ oil coalescing filter

Air Dryer

Governor

Air

Compressor

Supply

Reservoir

Primary

Reservoir

Secondary

Reservoir

SPRING

SHOULDER

STOP

OPERATION & LEAKAGE TESTS

Build the air system to governor cutout. Shut off the engine.

Using a soap solution, check all lines and fittings leading

to and from the PuraGuard QC

™

filter for leakage and

integrity. Repair any excessive leaks — exceeding a 1

inch bubble in 5 seconds — before restoring vehicle to

service.

WARNING! PLEASE READ AND FOLLOW

THESE INSTRUCTIONS TO AVOID

PERSONAL INJURY OR DEATH:

When working on or around a vehicle, the following

general precautions should be observed at all times.

1. Park the vehicle on a level surface, apply the

parking brakes, and always block the wheels.

Always wear safety glasses.

2. Stop the engine and remove ignition key when

working under or around the vehicle. When

working in the engine compartment, the engine

should be shut off and the ignition key should be

removed. Where circumstances require that the

engine be in operation, EXTREME CAUTION should

be used to prevent personal injury resulting from

contact with moving, rotating, leaking, heated or

electrically charged components.

3. Do not attempt to install, remove, disassemble or

assemble a component until you have read and

thoroughly understand the recommended

procedures. Use only the proper tools and observe

all precautions pertaining to use of those tools.

4. If the work is being performed on the vehicle’s air

brake system, or any auxiliary pressurized air

systems, make certain to drain the air pressure from

all reservoirs before beginning ANY work on the

vehicle. If the vehicle is equipped with an AD-IS

™

air dryer system or a dryer reservoir module, be

sure to drain the purge reservoir.

5. Following the vehicle manufacturer’s

recommended procedures, deactivate the electrical

system in a manner that safely removes all

electrical power from the vehicle.

6. Never exceed manufacturer’s recommended

pressures.

7. Never connect or disconnect a hose or line

containing pressure; it may whip. Never remove a

component or plug unless you are certain all

system pressure has been depleted.

8. Use only genuine Bendix

replacement parts,

components and kits. Replacement hardware,

tubing, hose, fittings, etc. must be of equivalent

size, type and strength as original equipment and

be designed specifically for such applications and

systems.

9. Components with stripped threads or damaged

parts should be replaced rather than repaired. Do

not attempt repairs requiring machining or welding

unless specifically stated and approved by the

vehicle and component manufacturer.

10. Prior to returning the vehicle to service, make

certain all components and systems are restored

to their proper operating condition.

PURAGUARD QC

™

OIL COALESCING FILTER

REMOVAL

This PuraGuard QC

™

filter removal process is presented in

the event it becomes necessary to replace the entire

coalescing filter.

Normal service and parts replacement does not require

removal of the PuraGuard QC

™

filter from the vehicle.

1. Park the vehicle on a level surface and prevent movement

by means other than the brakes.

2. Drain all reservoirs to 0 p.s.i.

3. Identify and disconnect the two air hoses from the

PuraGuard QC

™

filter.

4. Remove the two bolts that secure the bracket to the

vehicle, and remove the PuraGuard QC

™

filter from the

vehicle.

REPLACING OR RETROFITTING THE

PURAGUARD QC

™

OIL COALESCING FILTER

General

The following retrofit instructions are presented for reference

purposes only since Bendix aftermarket retrofit and

replacement PuraGuard QC

™

filter systems are packaged

with the most up-to-date installation instructions. The

instructions packaged with the filter should be followed in

lieu of those presented here.

ASSEMBLY

1. The top of the system filter has an arrow symbol showing

the air flow direction (see figure 1). Secure the mounting

bracket to the body and spin-on cartridge.

RETROFIT: LOCATING THE PURAGUARD

™

FILTER ON THE VEHICLE

1. The PuraGuard QC

™

filter must be mounted vertically

(±5°) and must not be exposed to direct wheel splash

(located behind axle mud flap is acceptable).

2. Locate it as close to the first (supply) reservoir as

possible and upstream of the supply reservoir (see figure

3).

3. To minimize vibration, mount the PuraGuard QC

™

filter

on a frame rail. If the vehicle requires the filter to be

directly mounted to the reservoir, be sure to only use a

high strength nipple fitting. (See further notes under

Connecting the Air Hoses.)

4. Do not locate the PuraGuard QC

™

filter near heat

producing components such as the vehicle exhaust and

provide adequate clearance from moving components

e.g. drive shaft, suspension, pitman arm, etc.

5. Locate the PuraGuard QC

™

filter on the vehicle so that

a minimum of 12 inches of clearance is available

horizontally (90° minimum arc) to allow servicing. This

will permit a strap wrench to be used when replacing

the filter.

6. Be sure that there is sufficient room to attach hoses to

the PuraGuard QC

™

filter.

7. To permit draining of collected contaminants, at least a

6 inch clearance below the filter is recommended.

Nominal clearance above is required.

8. The PuraGuard QC

™

oil coalescing filter must be

installed after a properly functioning air dryer. Failure

to locate the filter after an air dryer can cause the filter

to malfunction. An air dryer eliminates certain conditions

in the discharge line that could compromise the design

of the filter.

9. Do not mount the unit in the engine compartment.

MOUNTING THE PURAGUARD QC

™

OIL

COALESCING FILTER

1. After positioning the PuraGuard QC

™

oil coalescing filter

according to the installation requirements, mark the

position of the mounting holes on the frame rail. Note:

Check the vehicle manual before drilling a frame

member.

2. Use vehicle manufacturer guidelines for mounting

hardware (use at least grade 5 hardware). Torque to

160-200 in-lbs.

CONNECTING THE AIR HOSES

1. The PuraGuard QC

™

filter supply and delivery ports are

1/2-14 NPT. Install minimum 1/2 inch inside diameter

air hoses. Install fittings prior to mounting the filter.

2. Hoses must be installed without tight turns that might

cause air flow restrictions. Note: Check that the hose

attachment agrees with the air flow arrow symbol (see

Figure 1).

OPERATIONAL TEST

Build the air system to governor cutout. Shut off the engine.

Using a soap solution, check all hoses and fittings leading

to and from the filter for leakage and integrity. Repair any

excessive leaks - exceeding a 1 inch bubble in 5 seconds

- before restoring vehicle to service.

MAINTENANCE KIT INSTALLATION

KIT DESCRIPTION

A kit is available for cartridge replacement.

VEHICLE PREPARATION

1. Park the vehicle on a level surface and prevent movement

by means other than the brakes.

2. Drain all reservoirs to 0 p.s.i.

3. Drain the contents of the sump into a suitable container

for disposal and then close the drain valve.

DISASSEMBLY AND CLEANING

1. Using a strap wrench, unscrew the cartridge.

2. Remove and discard the cartridge.

INSPECTION

1. Inspect the PuraGuard QC

™

oil coalescing filter for

broken or missing parts. Replace as necessary.

2. Inspect the drain valve for any build-up that could impair

its function. Clean as necessary.

3. Inspect the housing during filter replacement. Replace

the PuraGuard QC

™

oil coalescing filter if the body is

becoming clogged with carbon or dirt, clean the supply

and delivery ports if necessary.

ASSEMBLY

1. Tighten the replacement cartridge by turning the cartridge

180° after the cartridge seal touches the aluminum body.

Tighten with a strap wrench, do not tighten by turning

the drain valve.

OPERATIONAL TEST

Build the air system to governor cutout. Shut off the engine.

Using a soap solution, check all hoses and fittings leading

to and from the PuraGuard QC

™

filter for leakage and

integrity. Repair any excessive leaks - exceeding a 1 inch

bubble in 5 seconds - before restoring vehicle to service.

FIGURE 5 - MAINTENANCE KITS

Mounting Bracket Kit Piece No. 5013671

This kit contains the mounting hardware needed

for installing the PuraGuard QC

™

oil coalescing

filter.

INCLUDED

IN KIT

Cartridge Kit Piece No. 5013672

This kit contains the PuraGuard QC

™

oil

coalescing filter spin-on cartridge only.

SPIN-ON

CARTRIDGE

PURAGUARD QC

™

OIL COALESCING FILTER TROUBLESHOOTING CHART

SYMPTOMS

1. More often than normal

(monthly) sump draining

required.

CAUSE

REMEDY

A. PuraGuard QC

™

oil

coalescing filter installed

in incorrect position in

system.

B. Alcohol injector in

system.

C. Air dryer malfunction.

D. Compressor malfunction.

2. Bypass feature not

working.

A. Supply and delivery air

connections reversed.

A. Reverse hose connections.

A. See figure 3.

B. The PuraGuard QC

™

filter is not recommended

to be used in conjunction

with an alcohol

evaporator or injector. [The PuraGuard QC

™

filter will remove the liquid or aerosol alcohol

introduced, defeat the purpose of the evaporator/

injector and require the sump to be drained more

often than usual.]

C. Check the air dryer.

D. Check the compressor.

3. Oil in the system.

A. Supply and delivery air

connections reversed.

B. Sump not drained

regularly.

C. Cartridge maintenance

interval exceeded.

D. Air dryer malfunction.

E. Compressor malfunction.

A. Reverse hose connections.

B. Drain the sump every 300 operating hours, 8,000

miles or one (1) month. (Draining can be done

more frequently if desired.)

C. Use a maintenance kit to replace the cartridge

every 3600 operating hours, 100,000 miles or

one (1) year whichever is less.

D. Check the air dryer.

E. Check Compressor.

BENDIX BW2396 User manual

Brand: BENDIX

Model: BW2396

Category: Motor vehicle accessories & components

Type: User manual

This manual is also suitable for

SD-08-187B

Download PDF

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BENDIX BW2396 User manual

This manual is also suitable for

BENDIX BW2396 User manual

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